Electromagnetically-operated valve.



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APPLICATION FILED APR. 23, 1906. l

' Patented Jan, 11,1910.

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APPLICATION FILED APR.23, 1806.

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ELECTROMAGNETICALLY-OPERATED VALVE.

Specification of Letters Patent.

Patented Jan. 11, 1910.

Application filed April 23, 1906. Serial No. 318,216.

To all whom it may concern:

Be it known that we, ALBERT GAUDIN and Emtom) TELLIER, citizens of theFrench Republic, residing at Douai, in France, have invented certain newand useful Improvements in Electromagnetically Operated Valves, of whichthe following is a specification.

This invention relates to an improved electro-magnetically operatedvalve more particularly adapted for the purpose of controllinggas-burners and the like from a distance.

The invention is illustrated in the annexed drawing in which Figure 1 isa horizontal section of the valve-controlling mechanism, Fig. 2 avertical section on the line VS of Fig. 1 with parts broken away andFig. 3 a vertical section on the line XWV of Fig. 1 with parts removedor broken away. Fig. 4 is a vertical section with parts in elevation,Fig. 5 a plan view and Fig. 6 a vertical section at right angles to Fig.4 illustrating a modified form of construction. Figs. 7 and 8 aresections on the same plane as Fig. 6 illustrating the armature valve andco-acting parts in different positions, Figs. 8 to 10 are diagrams ofthe aforesaid modified form on an enlarged scale, but showing also afurther slight modification. Figs. 11 and 12 are detail views of parts.

The apparatus illustrated in Figs. 1, 2 and 3 comprises anelectro-magnet with two coils 0 and f and an armature N connected with adog P adapted to engage a toothed plate e rotatable about an axle g, thesaid plate 6 being connected by a rod t with the valve is of the gasinlet passage C. A is a cylindrical casing fastened on the base Btraversed by the gas passage C. D is a ring carrying the coils c and f.a and b are two screws passed through holes in the ring D and inthe-casing A and screwed into a bridge E. F F are two washers spacingthe ring D from the casing A. The screws (1 I) thus serve to secure thering D and the bridge E to the casing A. G is an external casing. brokenaway in Figs. 2 and 3. To the bridge E is secured by screws E a forkedangle pieceE between the legs of which the armature N and the plate ehave pivotal movement independently of each other on the axle g which iscarried by the legs of the angle piece. The upper end of the angle pieceforms a nose It for a purpose hereinafter described. One of the legs ofthe angle piece is extended at E to carry the pivot of the pawl j. E isa stop for limiting the downward movement of the armature N. The saidvalve is normally held against its seat by means of a tension spring IsThe armature N is adapted to rise when current traverses the coils o f,these being so wound that consequent poles are produced. The upwardmovement of the armature is limited by the pole-pieces of the magnet,and the downward movement by the abutment E \Vhen the armature is notattracted, the tooth 2' of the dog P, which is attached to the armature,normally engages one of the teeth of the plate 6, and the subsequentattraction of the armature N by the magnet thus causes the said plate tobe lifted and rotated about the axle 9 through a certain angle and thevalve opened until the projection h on the dog P abuts against the noseit and thus causes the tooth 2' of said dog to be disengaged from toothof the plate. This position is shown in Fig. 2. The plate 6 is thenretained in its elevated position by the pawl j. Renewed attraction ofthe armature by the magnet, after the armature has been allowed todescend in order that the dog P may again engage the plate e, causes thelatter to be rotated into a more elevated position, the movement of theplate and consequently of the valve being again interrupted by theabutment of the pawl P against the nose It. The opening of the'valvethus takes place in a plurality of successive steps. For closing thevalve the pawl j must be disengaged from the plate 6. For this purposethe lower part of said plate is so constructed that when the latter hasbeen rotated upward through a certain angle the pawl j is thrown out ofaction by the said lower part, so that the plate 6, when disengaged fromthe dog P, can fall abruptly to its lowest position, the pawl j thenreturning to its operative position. In this case the arrangement may besuch, that the first excitation of the electro-magnet causes the valveis to be half opened, the valve being fully opened by the secondexcitation of the magnet, and closed by the third excitation. Only oneswitch and one electro-magnet are required for this purpose.

The modified construction illustrated in Figs. 4 to 12 comprises a coverA and base E the coils c and f wound on soft iron cores 8 and 4respectively, being externally arranged and inclosed in a suitablecasing e which engages an annular groove 1 provided in the lower surfaceof the base 13 A screw 2 (Fig. 6) serves to fix the casing e to the baseE the casing 6 being how ever omitted in this figure. The mechanismcomprises a pivoted armature N to the tail of which is suspended a dog Pand a pivoted valve 76 adapted to co-act with a seat The cores 3 and 4of the electro-magnet 0 f are bent upward at 5 and flattened at 6 (Fig.6), so as to form a shoulder at 7 (Fig. 4); the upper and lower ends ofthe cores are screw-threaded, the said lower ends being connect-ed witheach other by a yoke D and the upper ends, which pass through the base Bbeing screwed to triangular pole-pieces and H respectively. The armatureN is rotatable about pivots 8 and 9 and is provided with rearwardlyextending arms It and R between which the dog P is suspended by means ofpivots or journals 13 and 14. The dog P (Fig. 12) is provided with twohooks 10 and 11 and a notch 12, the latter being engaged by a spring orwire T wound on an axle T in such a manner that it tends to normallyretain the armature in its position of rest elevated from the poles ofthe magnet. j is a bow pivotally supported at 1-3 and 16 and providedwith a hook 17, adapted to engage an arm 22 of the valve and also with aprojection 18 for a purpose hereinafter described. The armature N bow jand axle T are all supported by a. frame 1. The rearwardly extending armR of the armature terminates in a vertical prolongation R which servesas a rest or stop for the armature when in the elevated position, asshown in Fig. 8. The journals 19 and 20 of the valve 70 have bearing ina support m and the valve is provided at its lower end with a tooth 21adapted to cooperate with the aforesaid hook 10 of the dog P The valve70 is normally pressed against its seat 2' by a spring 23, said seatbeing provided with an annular groove or grooves 24: adapted to beengaged by a corresponding boss or bosses with which the valve isprovided.

In Figs. 6 and 8 the valve is shown closed, the hook 10 of dog Pengaging the tooth 21 of the valve. Excitation of the electromagnetcauses the valve to be raised by the dog and to be engaged by hook 17 ofthe bow 7' (as in Fig. 7) so that the valve does not return to its seatwhen the armature is released by the magnet. hen the electromagnet is aain excited the hook 11 of dog P engages the projection 18 and the bow jis thus swung outward carrying with it the dog P and the dog is by thismeans deflected and does not engage the tooth 21 of the valve when thelatter is released by the hook 17 being withdrawn from under the arm 22which is consequent on the outward swing of the bow j When so releasedthe valve therefore closes under the action of spring 23. The gas orother fluid flows through the duct 0 with which the base B is providedand through a duct 0 in a screw connection A fixed to the cover A (Fig.4). The lower end of the duct 0 is enlarged and screw threaded as shownin Fig. 6 to allow of connecting the valve with the pipe or otherconduit which it is to control.

The diagrams 8 9 and 10 illustrate a modification of the constructionshown in Figs. 1 to 8, to provide for opening the valve in successivestages. For this purpose the valve has a plurality of projections s r tobe successively engaged by the hook 10 of the dog P upon successivemagnetic impulses. The bow y' has also successive steps a 1' in place ofthe projection 17 designed to hold the valve raised in each of thepositions to which the dog P lifts it. On reaching the highest step, thebow 7' will have swung so far in that upon the next magnetic impulse thehook 11 of dog P engages the projection 18. In other respects the actionis the same as described with reference to Figs. 4 to 8.

We do not claim broadly an electrically actuated toothed member adaptedto engage another toothed member to successively open and close a valve,with means for retaining said second toothed member against retrogrademovement but lVhat we claim as our invention and desire to secure byLetters Patent of the United States is 1. In an electromagneticallyoperated valve the combination with a valve seat and valve normallyspring pressed thereagainst, of an electromagnet, an armature adapted tobe attracted thereby, an oscillatory toothed member in direct connectionwith the valve, a dog in connection with said armature adapted upon eachattraction of the armature to engage a tooth of said member and movesame through a certain distance to open the valve, an abutment adaptedto be engaged by said dog to release same from the toothed member whenthe latter has completed a predetermined movement, means for retainingsaid oscillatory toothed member in the position given thereto by saiddog upon release by the latter, and means acting in conjunction with thetoothed member for disengaging said retaining means after apredetermined distance of movement of said toothed member whereby thelatter may return to normal position and the valve be closedsubstantially as described.

2. In an electromagnetically operated valve the combination of a valveseat having an annular recess, a pivoted valve normally spring pressedagainst said seat and having a projection engaging in said annularrecess, an electro1nagnet,a rockable armature adapted to be attractedthereby, a toothed member in direct connection with the valve, a dogacting in conjunction with said armature upon each attraction of thelatter to engage a tooth of said toothed member, and move same through acertain distance to open the valve, a pivotal bow having a series ofsurfaces adapted to retain the valve in the respective positionsimparted thereto by the dog, and an abutment on said bow adapted to beengaged by the dog when the toothed member has completed a predeterminedmovement whereby the valve is released from said retaining surfaces andpermitted to close substantially as described.

3. In an electromagnetically operated valve the combination with a valveseat and valve normally spring pressed thereagainst, of anelectromagnet, an armature adapted to be attracted thereby, anoscillatory toothed member in direct connection with the valve, a dog inconnection with said armature adapted upon each attraction of thearmature to engage successive teeth of said member and move same througha certain distance to open the valve in successive steps, an abutmentadapted to be engaged by said dog to release same from the toothedmember when the latter has completed a predetermined movement, means forretaining said oscillatory toothed member in the position given theretoby said dog upon release by the latter and means acting in conjunctionwith the toothed member for disengaging said retaining means after apredetermined number of successive movements of said toothed memberwhereby the latter may return to normal position and the valve be closedsubstantially as described.

4. In an electromagnetically operated valve the combination of a valveseat having an annular recess, a pivoted valvenormally spring pressedagainst said seat and having a projection engaging the said annularrecess, an electromagnet, a rockable armature adapted to be attractedthereby, a toothed member in direct connection with the valve, a dogacting in conjunction with said armature upon each attraction of thelatter to engage successive teeth of said toothed member, and move samethrough a certain distance to open the valve in successive steps, apivotal bow having a series of surfaces adapted to retain the valve inthe respective positions imparted thereto by the dog, and an abutment onsaid bow adapted to be engaged by the dog when the toothed member hascompleted a predetermined movement whereby the valve is released fromsaid retaining surfaces and permitted to close substantially asdescribed.

In witness whereof we have signed this specification in the presence oftwo witnesses.

ALBERT GAUDIN. EDMOND TELLIER.

Witnesses CHARLES BoIVIN, LEON BOIVIN.

